Reaction tube



FIG. 1 is a front, top and right side perspective view of a reaction tube showing our new design;

FIG. 2 is a front elevational view thererof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged top plan view thereof;

FIG. 9 is an enlarged bottom plan view thereof;

FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 2 thereof;

FIG. 11 is an enlarged cross-sectional view taken along line 11-11 in FIG. 10 thereof;

FIG. 12 is a cross-sectional view taken along line 12-12 in FIG. 6 thereof; and,

FIG. 13 is a cross-sectional view taken along line 13-13 in FIG. 6 thereof.

The dashed-dot-dashed lines represent the boundary lines of the claimed design. The broken lines shown in the drawings represent portions of the reaction tube that form no part of the claimed design. 

CLAIM We claim the ornamental design for a reaction tube, as shown and described. 